锁相环的响应可描述为接收信号完成一组数学运算来估计发射信号的相位。锁相环的一般方案涉及一带模拟部件的装置。本文讨论的方案是对接收信号取样以获得二进数字,然后利用数字计算估计相位。此方案取消了一般环路所用的压控振荡器和模拟滤波器。文中介绍了许多设计技术,包括跟踪非平稳信号的卡尔曼—布西技术。对设备复杂性和多用 The phase-locked loop response may describe completing a set of mathematical operations on the received signal to estimate the phase of the transmitted signal. The general concept of phase-locked loops involves a device with analog components. The solution discussed in this article is to sample the received signal to get the binary number, and then use the numbers to calculate the estimated phase. This program eliminates the use of general-purpose loop voltage-controlled oscillator and analog filter. This article describes many design techniques, including the Kalman-Busch technique to track non-stationary signals. Complexity and versatility for equipment